Kelp Persistence - North Central Coast - 1999 to 2010 [ds1058]

[This is an aggregated dataset of the 21 California North Central Coast kelp persistence rasters. The raster datasets were aggregated into a single 2 meter raster for better functionality in BIOS.] ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- This raster dataset was developed for the Sea Grant MPA Baseline Program as part of the project High Resolution Nearshore Substrate Mapping and Persistence with Multispectral Aerial Imagery (#R/MPA17 09-015). The study region is the California North Central Coast (NCC). This dataset is a thematic classification of kelp persistence between the years of 1999-2010 along California North Central Coasts intertidal to offshore region from Pigeon Point up to Point Arena. In that time period, kelp maps from 2000, 2001, 2007 and 2009 were unavailable and so the persistence analysis was created using data from the eight years 1999, 2002, 2003, 2004, 2005, 2006, 2008, and 2010. The imagery used for this habitat classification were collected by Ocean Imaging (OI), Fugro EarthData and the California Department of Fish and Wildlife (CDFW). Details on the data sources and processing are below in the Lineage section of this document. Kelp classifications in the form of ESRI shapefiles were acquired from the CDFW for the years of 1999, 2002, 2003, 2004, 2005, 2006 and 2008. For the 2010 kelp classification used in this analysis Fugro EarthData acquired the imagery between 09/22/2010 09/23/2010 and OI acquired this imagery on 03/26/2010 using the Digital Multispectral Camera (DMSC). Details on these systems and the data processing are below in the Lineage section of this document. The kelp presence for each available year were summed together for every 2 meter cell in the study region thus creating eight classes of annual kelp persistence during the 1999-2010 time period.

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